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ANDROID: GKI: mmu_notifier.h: add Android ABI padding to some structures

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Try to mitigate potential future driver core api changes by adding a
padding to struct mmu_notifier_ops and struct mmu_notifier.

Based on a change made to the RHEL/CENTOS 8 kernel.

Bug: 151154716
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: If631445abf20c22830a1c764ff2ccd662a7bd204
This commit is contained in:
Greg Kroah-Hartman
2020-05-02 09:41:56 +02:00
parent a1af787189
commit 2cf7c397cf
1 changed files with 9 additions and 0 deletions
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9
include/linux/mmu_notifier.h
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@ -7,6 +7,7 @@
#include <linux/spinlock.h>
#include <linux/mm_types.h>
#include <linux/srcu.h>
#include <linux/android_kabi.h>
struct mmu_notifier;
struct mmu_notifier_ops;
@ -188,6 +189,11 @@ struct mmu_notifier_ops {
*/
void (*invalidate_range)(struct mmu_notifier *mn, struct mm_struct *mm,
unsigned long start, unsigned long end);
ANDROID_KABI_RESERVE(1);
ANDROID_KABI_RESERVE(2);
ANDROID_KABI_RESERVE(3);
ANDROID_KABI_RESERVE(4);
};
/*
@ -204,6 +210,9 @@ struct mmu_notifier_ops {
struct mmu_notifier {
struct hlist_node hlist;
const struct mmu_notifier_ops *ops;
ANDROID_KABI_RESERVE(1);
ANDROID_KABI_RESERVE(2);
};
static inline int mm_has_notifiers(struct mm_struct *mm)